Holdback for vehicle-poles



(No Model.) I

H. W. ROBERTS. HOLD BACK FOR VEHIGLB POLES.

Patented Jan. 6, 1891.

INVENTOH v QY A TTOHNE Y8 UNITED STATES PATENT OFFICE.

HENRY W. ROBERTS, OF CHEBOYGAN, MICHIGAN.

HOLDBACK FOR VEHlCLE-POLES.

SPECIFICATION forming part of Letters Patent No. 444,305, dated January 6, 1891.

Application filed April 14., 1890.

To all whom it may concern.-

Be itknown that I, HENRY W. ROBERTS, of Cheboygan, in the county of Cheboygan and State of Michigan, have invented a new and useful Improvement in Adjustable Holdbacks, of which the following is a full, clear, and exact description.

My invention relates to improvements in adjustable holdbacks for vehicle-poles; and the object of my invention is to provide a simple, durable, and efficient device that may be applied to all sorts of vehicle-poles, and that may be easily adjusted thereon, thereby providing means for bringing animals of varying size into the same relation to the load without changing the length of the harnesstugs.

To this end my invention consists in the combination, with a: pole, of a pole-iron having a racked surface, and a holdback having a corresponding surface and means for adjustably attaching aholdback to the pole-iron. This construction will be hereinafter fully described, and specifically pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a vertical longitudinal section of the device as applied to a vehicle-pole. Fig. 2 is an inverted plan View of the same with a portion broken away to show the slot in the pole-iron, and Fig. 3 is a vertical crosssection on the linear m of Fig. 1.

The pole-iron B is attached to the pole A in the usual manner, so that the under surface of the pole-iron will be flush with the under surface of the pole. Upon the upper surface of the pole-iron B is a thickened portion B ,having transversely-ranging ratchetteeth a, said thickened portion having side flanges b, which inclose the said teeth. The pole-iron B is also provided with a longitudinal slot B which extends through the under member of the pole-iron and aligns vertically with a recess A, formed in the pole A.

The holdback consists of the horizontal baseplate C, which fits between the flanges b of the pole-iron B, and which has upon its upper surface projecting teeth at, which engage with the teeth a of the pole-iron B. The plate 0 is Serial No. 347,842. (No model.)

also provided with a vertically-extendingportion 0, which is braced by a rearwardlycurved member G which is united to the baseplate at its rear end.

The holdback is held in position upon the pole-iron B by a bolt 6, which projects through a perforation gin the plate 0 and through the slot B of the pole-iron B into the recess A of the pole A. The bolt 6 is'provided at its upper end with a wide head 6', which projects beyond the edges of the slot B and engages the upper surface of the pole-iron B. The bolt 6 is provided upon its lower end with a suitable thumb-nut f, by which it is held in position. The bolt e is also provided with a transverse perforation, through which a key f is passed to prevent the thumb-nut f from loosening.

The device is operated as follows: The vertical portion G projects at right angles from the pole A, and the neck-ring of the yoke will bear against the said portion in the usual manner. To adjust the holdback upon the pole, the nut fis loosened and the plate 0 moved backward or forward into a desired position, when the nut f is tightened and the holdback thus held in place.

It will be readily seen that the device may be applied to any sort of pole, either for a vehicle or for agricultural implements of the various kinds.

Having thus fully described my invention, I claim as new and desire to secure byLetters Patent- 1. The combination, with a slotted poleiron, of a holdback engaging the pole-iron and provided with an aperture, and a bolt passing through the slot of the pole-iron and the aperture of the holdback, substantially as described.

2. The combination, with a pole-iron slotted longitudinally and provided with ratchetteeth, of a holdback apertured and provided with ratchet-teeth engaging the ratchet-teeth of the pole-iron, and a bolt passing through the slot of the pole-iron and the aperture of the holdback and locking the parts together, substantially as herein shown and described.

3. The combination, with a pole and a longitudinally-slotted pole-iron attached thereto, having side flanges and teeth between the flanges, of a holdback adapted to fit between ing a recess A therein, and the pole-iron B, having teeth aand flanges Z1 thereon and the longitudinal slot B therein, of the plate 0, 15 having teeth (Z and a vertical projection C thereon, and means, as bolt 6 and nntf, for attaching the plate C and pole-iron B together, substantially as described.

I IENRY W. ROBERTS. Witnesses:

I. R. PHILP, W. E. BELL. 

